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        <title>1.1大数据概念 · 大数据hadoop课堂笔记</title>
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        <li class="header">第 1 部分 Hadoop入门</li>
        
        
    
        <li class="chapter " data-level="1.1" data-path="../">
            
                <a href="../">
            
                    
                    本书介绍
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2" data-path="../chapter1.html">
            
                <a href="../chapter1.html">
            
                    
                    第 1 章 大数据概论
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter active" data-level="1.2.1" data-path="11da-shu-ju-gai-nian.html">
            
                <a href="11da-shu-ju-gai-nian.html">
            
                    
                    1.1大数据概念
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.2" data-path="12-da-shu-ju-ying-yong-chang-jing.html">
            
                <a href="12-da-shu-ju-ying-yong-chang-jing.html">
            
                    
                    1.2 大数据应用场景
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.3" data-path="13-da-shu-ju-de-fa-zhan-qian-jing.html">
            
                <a href="13-da-shu-ju-de-fa-zhan-qian-jing.html">
            
                    
                    1.3 大数据的发展前景
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.4" data-path="14-da-shu-ju-de-te-dian.html">
            
                <a href="14-da-shu-ju-de-te-dian.html">
            
                    
                    1.4 大数据的特点
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.3" data-path="../di-2-zhang-hadoop-gai-shu.html">
            
                <a href="../di-2-zhang-hadoop-gai-shu.html">
            
                    
                    第 2 章 Hadoop 概述
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.3.1" data-path="../di-2-zhang-hadoop-gai-shu/21-hadoopshi-shi-yao.html">
            
                <a href="../di-2-zhang-hadoop-gai-shu/21-hadoopshi-shi-yao.html">
            
                    
                    2.1 Hadoop是什么
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.3.2" data-path="../di-2-zhang-hadoop-gai-shu/22-hadoopfa-zhan-li-shi.html">
            
                <a href="../di-2-zhang-hadoop-gai-shu/22-hadoopfa-zhan-li-shi.html">
            
                    
                    2.2 Hadoop发展简史
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.3.3" data-path="../di-2-zhang-hadoop-gai-shu/23-hadoopde-san-da-fa-xing-ban-ben.html">
            
                <a href="../di-2-zhang-hadoop-gai-shu/23-hadoopde-san-da-fa-xing-ban-ben.html">
            
                    
                    2.3 Hadoop的发行版本
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.3.4" data-path="../di-2-zhang-hadoop-gai-shu/24-hadoopde-you-shi.html">
            
                <a href="../di-2-zhang-hadoop-gai-shu/24-hadoopde-you-shi.html">
            
                    
                    2.4 Hadoop的优势
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4" data-path="../di-3-zhang-hadoop-de-zu-cheng-mo-kuai.html">
            
                <a href="../di-3-zhang-hadoop-de-zu-cheng-mo-kuai.html">
            
                    
                    第 3 章 Hadoop的组成模块
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.1" data-path="../di-3-zhang-hadoop-de-zu-cheng-mo-kuai/31-hadoop1xde-zu-cheng.html">
            
                <a href="../di-3-zhang-hadoop-de-zu-cheng-mo-kuai/31-hadoop1xde-zu-cheng.html">
            
                    
                    3.1 Hadoop1.x的组成
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.2" data-path="../di-3-zhang-hadoop-de-zu-cheng-mo-kuai/32-hadoop2xde-zu-cheng.html">
            
                <a href="../di-3-zhang-hadoop-de-zu-cheng-mo-kuai/32-hadoop2xde-zu-cheng.html">
            
                    
                    3.2 Hadoop2.x的组成
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.2.1" data-path="../di-3-zhang-hadoop-de-zu-cheng-mo-kuai/32-hadoop2xde-zu-cheng/321-hdfsjia-gou-gai-shu.html">
            
                <a href="../di-3-zhang-hadoop-de-zu-cheng-mo-kuai/32-hadoop2xde-zu-cheng/321-hdfsjia-gou-gai-shu.html">
            
                    
                    3.2.1 HDFS架构概述
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.2.2" data-path="../di-3-zhang-hadoop-de-zu-cheng-mo-kuai/32-hadoop2xde-zu-cheng/322-yarn-jia-gou-gai-shu.html">
            
                <a href="../di-3-zhang-hadoop-de-zu-cheng-mo-kuai/32-hadoop2xde-zu-cheng/322-yarn-jia-gou-gai-shu.html">
            
                    
                    3.2.2 YARN 架构概述
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.2.3" data-path="../di-3-zhang-hadoop-de-zu-cheng-mo-kuai/32-hadoop2xde-zu-cheng/323-mapreducejia-gou-gai-shu.html">
            
                <a href="../di-3-zhang-hadoop-de-zu-cheng-mo-kuai/32-hadoop2xde-zu-cheng/323-mapreducejia-gou-gai-shu.html">
            
                    
                    3.2.3 MapReduce架构概述
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.5" data-path="../di-3-zhang-hadoop-kai-fa-huan-jing-da-jian.html">
            
                <a href="../di-3-zhang-hadoop-kai-fa-huan-jing-da-jian.html">
            
                    
                    第 4 章 Hadoop 运行环境搭建
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.5.1" data-path="../di-3-zhang-hadoop-kai-fa-huan-jing-da-jian/41-zhun-bei-xu-ni-ji-huan-jing.html">
            
                <a href="../di-3-zhang-hadoop-kai-fa-huan-jing-da-jian/41-zhun-bei-xu-ni-ji-huan-jing.html">
            
                    
                    4.1 准备虚拟机环境
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2" data-path="../di-3-zhang-hadoop-kai-fa-huan-jing-da-jian/42-an-zhuang-jdk.html">
            
                <a href="../di-3-zhang-hadoop-kai-fa-huan-jing-da-jian/42-an-zhuang-jdk.html">
            
                    
                    4.2 安装jdk
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.3" data-path="../di-3-zhang-hadoop-kai-fa-huan-jing-da-jian/43-an-zhuang-hadoop.html">
            
                <a href="../di-3-zhang-hadoop-kai-fa-huan-jing-da-jian/43-an-zhuang-hadoop.html">
            
                    
                    4.3 安装 Hadoop
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.6" data-path="../di-4-zhang-yun-xing-hadoop.html">
            
                <a href="../di-4-zhang-yun-xing-hadoop.html">
            
                    
                    第 5 章 运行 Hadoop
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.6.1" data-path="../di-4-zhang-yun-xing-hadoop/51-ben-di-yun-xing-mo-shi.html">
            
                <a href="../di-4-zhang-yun-xing-hadoop/51-ben-di-yun-xing-mo-shi.html">
            
                    
                    5.1 本地运行模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.6.2" data-path="../di-4-zhang-yun-xing-hadoop/52-wei-fen-bu-yun-xing-mo-shi.html">
            
                <a href="../di-4-zhang-yun-xing-hadoop/52-wei-fen-bu-yun-xing-mo-shi.html">
            
                    
                    5.2 伪分布运行模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.6.3" data-path="../di-4-zhang-yun-xing-hadoop/53-wan-quan-fen-bu-yun-xing-mo-shi.html">
            
                <a href="../di-4-zhang-yun-xing-hadoop/53-wan-quan-fen-bu-yun-xing-mo-shi.html">
            
                    
                    5.3 完全分布运行模式
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

    
        
        <li class="header">第 2 部分 HDFS</li>
        
        
    
        <li class="chapter " data-level="2.1" data-path="../di-2-bu-fen-hdfs/di-6-zhang-hdfs-gai-shu.html">
            
                <a href="../di-2-bu-fen-hdfs/di-6-zhang-hdfs-gai-shu.html">
            
                    
                    第 6 章 HDFS概述
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.2" data-path="../di-2-bu-fen-hdfs/di-7-zhang-hdfs-de-shell-cao-zuo.html">
            
                <a href="../di-2-bu-fen-hdfs/di-7-zhang-hdfs-de-shell-cao-zuo.html">
            
                    
                    第 7 章 HDFS的shell操作
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.3" data-path="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo.html">
            
                <a href="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo.html">
            
                    
                    第 8 章 HDFS客户端操作
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="2.3.1" data-path="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/81-ke-hu-duan-huan-jing-zhun-bei.html">
            
                <a href="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/81-ke-hu-duan-huan-jing-zhun-bei.html">
            
                    
                    8.1 客户端环境准备
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.3.2" data-path="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/82-shi-yong-java-cheng-xu-lai-fang-wen-hdfs.html">
            
                <a href="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/82-shi-yong-java-cheng-xu-lai-fang-wen-hdfs.html">
            
                    
                    8.2 使用Java程序来访问HDFS
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.3.3" data-path="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/83-zai-hdfs-zhong-chuang-jian-mu-lu.html">
            
                <a href="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/83-zai-hdfs-zhong-chuang-jian-mu-lu.html">
            
                    
                    8.3 在HDFS中创建目录
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.3.4" data-path="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/84-hdfschang-yong-api-cao-zuo.html">
            
                <a href="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/84-hdfschang-yong-api-cao-zuo.html">
            
                    
                    8.4 上传文件
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.3.5" data-path="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/85-xia-zai-wen-jian.html">
            
                <a href="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/85-xia-zai-wen-jian.html">
            
                    
                    8.5 下载文件
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.3.6" data-path="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/86-wen-jian-jia-shan-chu.html">
            
                <a href="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/86-wen-jian-jia-shan-chu.html">
            
                    
                    8.6 文件夹删除
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.3.7" data-path="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/87-wen-jian-ming-geng-gai.html">
            
                <a href="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/87-wen-jian-ming-geng-gai.html">
            
                    
                    8.7 文件名更改
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.3.8" data-path="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/88-wen-jian-xiang-qing-cha-kan.html">
            
                <a href="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/88-wen-jian-xiang-qing-cha-kan.html">
            
                    
                    8.8 文件详情查看
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.3.9" data-path="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/89-wen-jian-he-wen-jian-jia-pan-duan.html">
            
                <a href="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/89-wen-jian-he-wen-jian-jia-pan-duan.html">
            
                    
                    8.9 文件和文件夹判断
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.3.10" data-path="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/810-hdfsde-i-o-liu-cao-zuo.html">
            
                <a href="../di-2-bu-fen-hdfs/di-8-zhang-hdfs-ke-hu-duan-cao-zuo/810-hdfsde-i-o-liu-cao-zuo.html">
            
                    
                    8.10 HDFS的I/O流操作
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="2.4" data-path="../di-2-bu-fen-hdfs/di-9-zhang-hdfs-shu-ju-liang.html">
            
                <a href="../di-2-bu-fen-hdfs/di-9-zhang-hdfs-shu-ju-liang.html">
            
                    
                    第 9 章 HDFS读写数据流
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="2.4.1" data-path="../di-2-bu-fen-hdfs/di-9-zhang-hdfs-shu-ju-liang/91-xiang-hdfs-xie-ru-shu-ju-de-liu-cheng.html">
            
                <a href="../di-2-bu-fen-hdfs/di-9-zhang-hdfs-shu-ju-liang/91-xiang-hdfs-xie-ru-shu-ju-de-liu-cheng.html">
            
                    
                    9.1 从HDFS读取数据的流程
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.4.2" data-path="../di-2-bu-fen-hdfs/di-9-zhang-hdfs-shu-ju-liang/92-cong-hdfs-du-qu-shu-ju-de-liu-cheng.html">
            
                <a href="../di-2-bu-fen-hdfs/di-9-zhang-hdfs-shu-ju-liang/92-cong-hdfs-du-qu-shu-ju-de-liu-cheng.html">
            
                    
                    9.2 向HDFS写入数据的流程
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="2.5" data-path="../di-2-bu-fen-hdfs/di-10-zhang-namenode-he-secondarynamenode.html">
            
                <a href="../di-2-bu-fen-hdfs/di-10-zhang-namenode-he-secondarynamenode.html">
            
                    
                    第 10 章 NameNode和SecondaryNameNode
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="2.5.1" data-path="../di-2-bu-fen-hdfs/di-10-zhang-namenode-he-secondarynamenode/101-gong-zuo-ji-zhi.html">
            
                <a href="../di-2-bu-fen-hdfs/di-10-zhang-namenode-he-secondarynamenode/101-gong-zuo-ji-zhi.html">
            
                    
                    10.1 NameNode和SecondaryNameNode工作机制
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.5.2" data-path="../di-2-bu-fen-hdfs/di-10-zhang-namenode-he-secondarynamenode/102-namenodede-wen-jian-mu-lu-jie-gou.html">
            
                <a href="../di-2-bu-fen-hdfs/di-10-zhang-namenode-he-secondarynamenode/102-namenodede-wen-jian-mu-lu-jie-gou.html">
            
                    
                    10.2 NameNode的文件目录结构
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.5.3" data-path="../di-2-bu-fen-hdfs/di-10-zhang-namenode-he-secondarynamenode/103-secondarynamenodede-wen-jian-mu-lu-jie-gou.html">
            
                <a href="../di-2-bu-fen-hdfs/di-10-zhang-namenode-he-secondarynamenode/103-secondarynamenodede-wen-jian-mu-lu-jie-gou.html">
            
                    
                    10.3 SecondaryNameNode的文件目录结构
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.5.4" data-path="../di-2-bu-fen-hdfs/di-10-zhang-namenode-he-secondarynamenode/104-namenodegu-zhang-chu-li.html">
            
                <a href="../di-2-bu-fen-hdfs/di-10-zhang-namenode-he-secondarynamenode/104-namenodegu-zhang-chu-li.html">
            
                    
                    10.4 NameNode故障处理
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.5.5" data-path="../di-2-bu-fen-hdfs/di-10-zhang-namenode-he-secondarynamenode/105-ji-qun-an-quan-mo-shi.html">
            
                <a href="../di-2-bu-fen-hdfs/di-10-zhang-namenode-he-secondarynamenode/105-ji-qun-an-quan-mo-shi.html">
            
                    
                    10.5 集群安全模式
            
                </a>
            

            
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        <li class="chapter " data-level="2.5.6" data-path="../di-2-bu-fen-hdfs/di-10-zhang-namenode-he-secondarynamenode/106-namenodeduo-mu-lu-pei-zhi.html">
            
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                    11.3 数据完整性
            
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                    11.5 DataNode多目录配置
            
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